You can also download the Dictionary files here.StarDict uses the opensource dictionaries collected from the internet. If any of them influence your copyright, please let us know, we will delete it.
WyabdcRealPeopleTTS package make StarDict pronounce those English words. It is just many .wav files.
In Linux, you can extract(tar -xjvf) the tarball at "/usr/share/". In Windows, you can use WinRAR to extract the tarball and install it at "C:\Program Files\" or "Program Files\StarDict\".